WatchList.WPF - Add "CustomDataGrid" to select multiple lines and del…

…ete them.

WatchList.WPF/Component/CustomDataGrid.cs

@@ -0,0 +1,24 @@
+using System.Collections;
+using System.Windows;
+using System.Windows.Controls;
+
+namespace WatchList.WPF.Component
+{
+    public class CustomDataGrid : DataGrid
+    {
+        public CustomDataGrid()
+            => SelectionChanged += CustomDataGrid_SelectionChanged;
+
+        void CustomDataGrid_SelectionChanged(object sender, SelectionChangedEventArgs e)
+            => SelectedItemsList = SelectedItems;
+
+        public IList SelectedItemsList
+        {
+            get => (IList)GetValue(SelectedItemsListProperty);
+            set => SetValue(SelectedItemsListProperty, value);
+        }
+
+        public static readonly DependencyProperty SelectedItemsListProperty
+                = DependencyProperty.Register("SelectedItemsList", typeof(IList), typeof(CustomDataGrid), new PropertyMetadata(null));
+    }
+}

WatchList.WPF/ViewModel/CinemaPageViewModel.cs

@@ -1,3 +1,4 @@
+using System.Collections;
 using System.Collections.ObjectModel;
 using System.Windows;
 using DevExpress.Mvvm;
@@ -20,6 +21,8 @@ namespace WatchList.WPF.ViewModel
 {
     public class CinemaPageViewModel : BindableBase
     {
+        private const string HighlightTheDesiredLine = "No items selected.";
+
         private readonly WatchItemService _itemService;
         private readonly IMessageBox _messageBox;
         private readonly ILogger<WatchItemRepository> _logger;
@@ -29,11 +32,13 @@ public class CinemaPageViewModel : BindableBase
         private readonly FilterItemModel _filterItem;
         private readonly ItemSearchRequest _searchRequests;
 
+        private readonly bool _isAscending = true;
+
         private ObservableCollection<WatchItem> _watchItems = new ObservableCollection<WatchItem>();
 
         private PagedList<WatchItem> _pagedList;
-        private readonly bool _isAscending = true;
 
+        private IList _selectItems = new ArrayList();
         private int _curPage;
 
         private int CurPage
@@ -61,6 +66,12 @@ public CinemaPageViewModel(IMessageBox messageBox,
             LoadDataAsync();
         }
 
+        public IList SelectItems
+        {
+            get => _selectItems;
+            set => SetValue(ref _selectItems, value);
+        }
+
         public ObservableCollection<WatchItem> WatchItems
         {
             get => _watchItems;
@@ -85,7 +96,8 @@ public RelayCommandApp MoveToLastPage
 
         public RelayCommandApp AddItemCommand
             => new RelayCommandApp(async async => await MoveAddItem());
-
+        public RelayCommandApp DeleteItemsCommand
+            => new RelayCommandApp(async async => await DeleteItems());
         public RelayCommandApp AddDataDBCommand
             => new RelayCommandApp(async async => await MoveAddData());
 
@@ -100,6 +112,31 @@ private async Task MoveAddItem()
             await LoadDataAsync();
         }
 
+        private async Task DeleteItems()
+        {
+            if (SelectItems.Count == 0)
+            {
+                await _messageBox.ShowInfo(HighlightTheDesiredLine);
+                return;
+            }
+
+            if (!await _messageBox.ShowQuestion("Delete select items?"))
+            {
+                return;
+            }
+
+            foreach (var item in SelectItems)
+            {
+                var isWatchItem = item as WatchItem;
+                if (isWatchItem != null)
+                {
+                    _itemService.Remove(isWatchItem.Id);
+                }
+            }
+
+            await LoadDataAsync();
+        }
+
         private async Task MoveAddData()
         {
             var addDataWindow = new MergeDatabaseWindow();

WatchList.WPF/ViewModel/DataReplaceMessageVM.cs

@@ -1,7 +1,6 @@
 using System.Windows;
 using CommunityToolkit.Mvvm.Input;
 using WatchList.Core.Model.QuestionResult;
-using WatchList.WPF.Models.ModelDataLoad;
 
 namespace WatchList.WPF.ViewModel
 {
@@ -11,16 +10,13 @@ public class DataReplaceMessageVM
 
         private readonly string _titleLabel;
 
-        public DataReplaceMessageVM(string titleItem, DialogReplaceQuestionManager questionResult)
-        {
-            _titleLabel = titleItem;
-            ResultQuestion = questionResult;
-        }
+        public DataReplaceMessageVM(string titleItem)
+            => _titleLabel = titleItem;
 
         public string QuestionLabel => Question;
         public string TitleLabel => _titleLabel;
 
-        public DialogReplaceQuestionManager ResultQuestion { get; private set; }
+        public DialogReplaceItemQuestion ResultQuestion { get; private set; } = DialogReplaceItemQuestion.Unknown;
 
         public RelayCommand<Window> MoveYesCommand => new(MoveYesClick);
         public RelayCommand<Window> MoveAllYesCommand => new(MoveAllYesClick);
@@ -29,28 +25,28 @@ public DataReplaceMessageVM(string titleItem, DialogReplaceQuestionManager quest
 
         private void MoveYesClick(Window window)
         {
-            ResultQuestion.UpdateData(DialogReplaceItemQuestion.Yes);
+            ResultQuestion = DialogReplaceItemQuestion.Yes;
             window.DialogResult = true;
             window?.Close();
         }
 
         private void MoveAllYesClick(Window window)
         {
-            ResultQuestion.UpdateData(DialogReplaceItemQuestion.AllYes);
+            ResultQuestion = DialogReplaceItemQuestion.AllYes;
             window.DialogResult = true;
             window?.Close();
         }
 
         private void MoveNoClick(Window window)
         {
-            ResultQuestion.UpdateData(DialogReplaceItemQuestion.No);
+            ResultQuestion = DialogReplaceItemQuestion.No;
             window.DialogResult = true;
             window?.Close();
         }
 
         private void MoveAllNoClick(Window window)
         {
-            ResultQuestion.UpdateData(DialogReplaceItemQuestion.AllNo);
+            ResultQuestion = DialogReplaceItemQuestion.AllNo;
             window.DialogResult = true;
             window?.Close();
         }

WatchList.WPF/Views/CinemaPage.xaml

@@ -4,8 +4,7 @@
       xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
       xmlns:d="http://schemas.microsoft.com/expression/blend/2008"     
       mc:Ignorable="d"
-      xmlns:local="clr-namespace:WatchList.WPF.Views"
-      xmlns:ui="http://schemas.lepo.co/wpfui/2022/xaml"
+      xmlns:local="clr-namespace:WatchList.WPF.Component"
       Title="CinemaPage"
       DataContext="{Binding CinemaPageViewModel, Source={StaticResource ViewModelLocator}}"
       MinHeight="300" MinWidth="300">
@@ -26,24 +25,28 @@
             <ColumnDefinition/>
             <ColumnDefinition/>
         </Grid.ColumnDefinitions>
-        <ui:DataGrid Grid.Row="1" 
-                     ColumnWidth="Auto"
-                     Grid.ColumnSpan="8"
-                     FontSize="12"
-                     AutoGenerateColumns="False"
-                     FontStretch="ExtraCondensed"
-                     IsReadOnly="True"
-                     ItemsSource="{Binding WatchItems, Mode=OneWay}">
-            <DataGrid.Columns>
+        <local:CustomDataGrid Grid.Row="1" 
+                  Grid.ColumnSpan="8"
+                  ColumnWidth="Auto"
+                  FontSize="12"
+                  AutoGenerateColumns="False"   
+                  FontStretch="ExtraCondensed"
+                  IsReadOnly="True"
+                  SelectionMode="Extended" 
+                  SelectionUnit="FullRow" 
+                  SnapsToDevicePixels="True"
+                  SelectedItemsList="{Binding SelectItems, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"
+                  ItemsSource="{Binding WatchItems}">
+            <local:CustomDataGrid.Columns>
                 <DataGridTextColumn Header="Title" Binding="{Binding Path=Title}" Width="Auto" />
                 <DataGridTextColumn Header="Season/Part" Binding="{Binding Path=Sequel}" Width="Auto" />
                 <DataGridTextColumn Header="Status" Binding="{Binding Path=Status}" Width="Auto" />
                 <DataGridTextColumn Header="Date" Binding="{Binding Path=Date, StringFormat=dd MMMM yyyy}" Width="Auto"/>
                 <DataGridTextColumn Header="Grade" Binding="{Binding Path=Grade}" Width="Auto" />
                 <DataGridTextColumn Header="Type" Binding="{Binding Path=Type}" Width="Auto" />
-                <DataGridTextColumn Header="Id" Binding="{Binding Path=Id}" Width="Auto" />
-            </DataGrid.Columns>
-        </ui:DataGrid>
+                <DataGridTextColumn Header="Id" Binding="{Binding Path=Id}" Width="Auto"/>
+            </local:CustomDataGrid.Columns>
+        </local:CustomDataGrid>
         <Grid Grid.Column="1" Grid.Row="2" Grid.ColumnSpan="6">
             <StackPanel Grid.Row="1" Orientation="Horizontal" HorizontalAlignment="Center">
                 <Button Margin="2 2 2 2" 
@@ -127,7 +130,8 @@
                        FontSize="12" FontWeight="DemiBold" 
                        AutomationProperties.Name="Btn_Delete_Cinema" 
                        Background="AliceBlue"
-                       Focusable="False" />
+                       Focusable="False" 
+                       Command="{Binding DeleteItemsCommand}"/>
             <Button
                        Content="Add Data" 
                        HorizontalAlignment="Stretch" 

WatchList.WPF/Views/CinemaPage.xaml.cs

@@ -1,17 +1,4 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-using System.Windows;
 using System.Windows.Controls;
-using System.Windows.Data;
-using System.Windows.Documents;
-using System.Windows.Input;
-using System.Windows.Media;
-using System.Windows.Media.Imaging;
-using System.Windows.Navigation;
-using System.Windows.Shapes;
 
 namespace WatchList.WPF.Views
 {

WatchList.WPF/Views/Message/DataReplaceMessageWindow.xaml.cs

@@ -1,4 +1,3 @@
-using WatchList.WPF.Models.ModelDataLoad;
 using WatchList.WPF.ViewModel;
 
 namespace WatchList.WPF.Views.Message
@@ -8,10 +7,10 @@ namespace WatchList.WPF.Views.Message
     /// </summary>
     public partial class DataReplaceMessageWindow
     {
-        public DataReplaceMessageWindow(string titleName, DialogReplaceQuestionManager replaceQuestionManager)
+        public DataReplaceMessageWindow(DataReplaceMessageVM viewModel)
         {
             InitializeComponent();
-            DataContext = new DataReplaceMessageVM(titleName, replaceQuestionManager);
+            DataContext = viewModel;
         }
     }
 }

WatchList.WPF/Views/Message/MessageWindow.cs

@@ -1,7 +1,7 @@
 using System.Windows;
 using WatchList.Core.Model.QuestionResult;
 using WatchList.Core.Service.Component;
-using WatchList.WPF.Models.ModelDataLoad;
+using WatchList.WPF.ViewModel;
 using MessageBoxWindow = System.Windows.MessageBox;
 
 namespace WatchList.WPF.Views.Message
@@ -10,11 +10,11 @@ public class MessageWindow : IMessageBox
     {
         public Task<DialogReplaceItemQuestion> ShowDataReplaceQuestion(string titleItem)
         {
-            var replaceQuestionManager = new DialogReplaceQuestionManager();
-            var windowDataReplaceItem = new DataReplaceMessageWindow(titleItem, replaceQuestionManager);
+            var dataReplaceMessageVM = new DataReplaceMessageVM(titleItem);
+            var windowDataReplaceItem = new DataReplaceMessageWindow(dataReplaceMessageVM);
 
             return windowDataReplaceItem.ShowDialog() == true
-                ? Task.FromResult(replaceQuestionManager.DialogReplaceItemQuestion)
+                ? Task.FromResult(dataReplaceMessageVM.ResultQuestion)
                 : Task.FromResult(DialogReplaceItemQuestion.Unknown);
         }